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【单选题】
注射卡介苗可以预防结核杆菌引起的肺结核病,下列有关叙述正确的是( )
A.
该疫苗也能预防流行性感冒
B.
体内会产生抵抗结核杆菌的抗原
C.
这种免疫属于特异性免疫
D.
注射的卡介苗在免疫学上属于抗体
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参考答案：
举一反三
【单选题】LTE系统用户传输数据主要使用
A.
专用信道
B.
公用信道
C.
共享信道
D.
信令信道
查看完整题目与答案
【单选题】Why did the accident take place? Because ______.
A.
the doctor drove badly
B.
the car hit a tree
C.
of the ice
D.
the road was too bad
查看完整题目与答案
【简答题】（本题满分7分）如图，在平面直角坐标系中，△ ABC的三个顶点的坐标分别为A（0,1），B（-1,1），C（-1,3）。 小题1:（1）画出△ABC关于x轴对称的△A 1 B 1 C 1 ，并写出点C 1 的坐标； 小题2:（2）画出△ABC绕原点O顺时针方向旋转90°后得到的△A 2 B 2 C 2 ，并写出点C 2 的坐标；， 小题3:（3）将△A 2 B 2 C 2 平移得到△ A 3 B ...
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【单选题】在污水的药剂中和法中,最常用的药剂是( )。
A.
苛性钠
B.
碳酸钠
C.
石灰
D.
电石渣
查看完整题目与答案
【单选题】The general election, originally ______for 29thSeptember, is to bepostponed until December.
A.
planned
B.
timetabled
C.
scheduled
D.
decided
查看完整题目与答案
【单选题】Why did many southerners go to the Northeast and the Midwest during World War Ⅱ?
A.
Because they wanted to learn to like country music.
B.
Because they wanted to take music with them.
C.
Because country music was popular all over the country.
D.
Because they wanted to work in the factories there.
查看完整题目与答案
【判断题】成熟环境是机会水平高、威胁水平小的环境
A.
正确
B.
错误
查看完整题目与答案
【单选题】The word pen originally meant 'feather used for writing with ink'. Now it refers to any devise used for writing with ink. This is an example of
A.
degradation of meaning.
B.
broadening of meaning.
C.
narrowing of meaning.
D.
elevation of meaning.
查看完整题目与答案
【单选题】Why did many southerners go to the Northeast and the Midwest during World, War Ⅱ?
A.
They wanted to learn to like country music.
B.
They wanted to take music with them.
C.
Country music was popular all over the country.
D.
They wanted to work in the factories there.
查看完整题目与答案
【简答题】在平面直角坐标系内有两个定点F 1 ，F 2 和动点P，F 1 ，F 2 坐标分别为F 1 （-1，0）、F 2 （1，0），动点P满足 | PF 1 | | PF 2 | = 2 2 ，动点P的轨迹为曲线C，曲线C关于直线y=x的对称曲线为曲线C″，直线y=x+m-3与曲线C″交于A、B两点，O是坐标原点，△ABO的面积为 7 ， （1）求曲线C的方程； （2）求m的值．
查看完整题目与答案
相关题目：
【单选题】LTE系统用户传输数据主要使用
A.
专用信道
B.
公用信道
C.
共享信道
D.
信令信道
查看完整题目与答案
【单选题】Why did the accident take place? Because ______.
A.
the doctor drove badly
B.
the car hit a tree
C.
of the ice
D.
the road was too bad
查看完整题目与答案
【简答题】（本题满分7分）如图，在平面直角坐标系中，△ ABC的三个顶点的坐标分别为A（0,1），B（-1,1），C（-1,3）。 小题1:（1）画出△ABC关于x轴对称的△A 1 B 1 C 1 ，并写出点C 1 的坐标； 小题2:（2）画出△ABC绕原点O顺时针方向旋转90°后得到的△A 2 B 2 C 2 ，并写出点C 2 的坐标；， 小题3:（3）将△A 2 B 2 C 2 平移得到△ A 3 B ...
查看完整题目与答案
【单选题】在污水的药剂中和法中,最常用的药剂是( )。
A.
苛性钠
B.
碳酸钠
C.
石灰
D.
电石渣
查看完整题目与答案
【单选题】The general election, originally ______for 29thSeptember, is to bepostponed until December.
A.
planned
B.
timetabled
C.
scheduled
D.
decided
查看完整题目与答案
【单选题】Why did many southerners go to the Northeast and the Midwest during World War Ⅱ?
A.
Because they wanted to learn to like country music.
B.
Because they wanted to take music with them.
C.
Because country music was popular all over the country.
D.
Because they wanted to work in the factories there.
查看完整题目与答案
【判断题】成熟环境是机会水平高、威胁水平小的环境
A.
正确
B.
错误
查看完整题目与答案
【单选题】The word pen originally meant 'feather used for writing with ink'. Now it refers to any devise used for writing with ink. This is an example of
A.
degradation of meaning.
B.
broadening of meaning.
C.
narrowing of meaning.
D.
elevation of meaning.
查看完整题目与答案
【单选题】Why did many southerners go to the Northeast and the Midwest during World, War Ⅱ?
A.
They wanted to learn to like country music.
B.
They wanted to take music with them.
C.
Country music was popular all over the country.
D.
They wanted to work in the factories there.
查看完整题目与答案
【简答题】在平面直角坐标系内有两个定点F 1 ，F 2 和动点P，F 1 ，F 2 坐标分别为F 1 （-1，0）、F 2 （1，0），动点P满足 | PF 1 | | PF 2 | = 2 2 ，动点P的轨迹为曲线C，曲线C关于直线y=x的对称曲线为曲线C″，直线y=x+m-3与曲线C″交于A、B两点，O是坐标原点，△ABO的面积为 7 ， （1）求曲线C的方程； （2）求m的值．
查看完整题目与答案
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